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return or returnless fuel rail? return or returnless fuel rail?
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Old 09-05-2007, 01:58 AM   #1 (permalink)
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return or returnless fuel rail?
The engine is too cramped and cluttered for me to tell for sure, so i want to get multiple and knowing opinions...
Which does a 1999 ATX 2.5L V6 (duratec) Return-style, or returnless fuel rail?
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Old 09-05-2007, 02:00 AM   #2 (permalink)
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Re: return or returnless fuel rail?
Could be either. What is the build date? It will be on the door jamb sticker.
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Old 09-05-2007, 02:50 AM   #3 (permalink)
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Re: return or returnless fuel rail?
To save time:

If before may 1999 you have return style fuel rail

If after may 1999 you have a returnless
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Old 09-05-2007, 04:55 AM   #4 (permalink)
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Re: return or returnless fuel rail?
Quote:
Originally Posted by ATX_99duratec25L View Post
The engine is too cramped and cluttered for me to tell for sure, so i want to get multiple and knowing opinions...
Which does a 1999 ATX 2.5L V6 (duratec) Return-style, or returnless fuel rail?
All you have to do is look under the throttle body and you will see the schrader valve (looks like a tire's valve cap)... that valve is on 1 of the fuel lines... IF there is another line behind it and parallel to it, then you have a RETURN style fuel system. IF there is only that 1 line with the Schrader Valve, then you have a RETURNLESS system...
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Old 09-05-2007, 08:39 AM   #5 (permalink)
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Re: return or returnless fuel rail?
Quote:
Originally Posted by michcougar View Post
To save time:

If before may 1999 you have return style fuel rail

If after may 1999 you have a returnless
Careful, mine was built during May 1999 and is return.
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Old 09-05-2007, 09:30 AM   #6 (permalink)
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Re: return or returnless fuel rail?
Quote:
Originally Posted by skater View Post
Careful, mine was built during May 1999 and is return.
And mine was built in May and is returnless

There is an actual cut-off date.
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Old 09-05-2007, 09:34 AM   #7 (permalink)
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Re: return or returnless fuel rail?
Wade your awake this early? you sick? lol i cant help out on this one mine was made in April.
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Old 09-05-2007, 11:24 AM   #8 (permalink)
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Re: return or returnless fuel rail?
Easiest way is like aircougar1 said. Look to see if there is one fuel line or two.
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Old 09-05-2007, 11:32 AM   #9 (permalink)
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Re: return or returnless fuel rail?
I've noticed a few other things as well, and perhaps you May kids (Skater and Wade) can verify.

As far as I have seen, return-style cars always have the little wire clip holding the fuse-box closed, while the returnless ones are just all plastic.

Also, return-style cars always have a metal MAF housing, while the returnless models have black plastic ones.

Can anyone prove otherwise?
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Old 09-05-2007, 11:45 AM   #10 (permalink)
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Re: return or returnless fuel rail?
My return model has the metal wire clip on the fuse box. Not sure about the MAF housing, I'll have to take a look.
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